This spread sheet has sample data and what your graphs should look like.
Here is a video of an alka-seltzer tab being dissolved in hot water.
Below are some pictures of how the experiment looked like when various temperature of water were used or when different surface areas of alka-seltzer were used.
Here is a video of an alka-seltzer tab being dissolved in hot water.
Below are some pictures of how the experiment looked like when various temperature of water were used or when different surface areas of alka-seltzer were used.